In SX Microcontrollers, SX/B Compiler and SX-Key Tool, nate wrote:

James,

My point is that when debugging, watching for the ISR to be executed is a pointless task - the operation of the debugger conflicts with the operation of the ISR.  Rest assured, when running in normal mode (ie not debugging) the ISR always happens on RTCC rollover (or multiple therof, if prescaler enabled).

 

You are also correct that W, Status, PC, and FSR (and M, SX48/52) are saved via the shadow registers, my mistake.  I will reiterate however, be careful what you do in the ISR - I can't count the times that I have spent trying to understand odd results of a program, only to find out the unexpected results are due to my own ISR that I forgot to take into account!

 

Nate

---------- End of Message ----------


You can view the post on-line at:
http://forums.parallax.com/forums/default.aspx?f=7&p=1&m=103133#m103282

Need assistance? Send an email to the Forum Administrator at forumadmin@parallax.com

The Parallax Forums are powered by dotNetBB Forums, copyright 2002-2006 (http://www.dotNetBB.com)